The anthelion is a spot on the parhelic circle (the white arc through the sun and running parallel to the horizon), where the Wegener arcs, the Hastings arcs and the Tricker arcs cross the parhelic circle and increase the brightness.

Origin

Late 17th century: from Greek anthēlion, neuter of anthēlios 'opposite to the sun', from anth- (variant of anti- 'against') + hēlios 'sun'.